<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        body{
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
            background: url("images/banner.jpg") no-repeat;
            background-size:cover;
        }
        h1{
            text-align: center;
            font-size: 40px;
            color: #fff;
            font-weight: 300;
        }
        .content{
            background:rgba(0, 0, 0, 0.21);
            position: relative;
            top: 40px;
            width: 48%;
            margin: 0 auto;
            overflow: hidden;
        }
        .content input{
            padding: 10px 0 ;
            display: block;
            margin: 5% auto;
            width:70%;
            font-family: 'Muli', sans-serif;
            border: 1px solid white;
            color: #fff;
            font-size: 18px;
            border-radius: 4px;
            background:rgba(0,0,0,0.4);
        }
        .content .changePassword{
            width: 70%;
            background: green;
        }
        .content h2{
            text-align: center;
            font-size: 40px;
            color: #fff;
            font-weight: 300;
        }
    </style>
</head>
<body>
    <h1>UNIQUE LOGIN FORM</h1>
    <div class="content">
        <h2>Sign Up Form</h2>
        <form>
            <input type="text" name="Phone" id="username" placeholder="用户名">
            <input type="password" name="oldpasword" id="oldpasword" placeholder="密码">
            <input type="password" name="newpaw" id="newpaw" placeholder="新密码">
            <input type="password" name="repeatpas" id="repeatpas" placeholder="再次输入新密码">
            <input type="submit" class="changePassword" value="修改密码">
        </form>
    </div>
</body>
</html>